Using science youtube videos?

My 8 year old wanted to start making videos on youtube. He loves learning, science, etc. At any rate, we are trying to make them like I try to do in the classroom. We're going for fun/silly first and trick them into learning The videos are a bit strange and wanted some real feedback from teachers. Would you show this in class? Is it too silly?

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Any feedback is very welcome. We've only made a few videos and would love to hear where we hit and where we miss. Thanks, Cheers!
J